What Is A Telemetry Receiver ?

[Daniel's Racing]

I know most of you already seen my new GPS recorder when I showed what it can do before but if you have not I think it works really well so far.

Waterproof to 150', rechargeable and it will give you a GPS speed reading for every foot of the way. Arm strap wraps around a noodle.

Almost impossible not to get good useable info dozens of times over for every run.

http://youtu.be/blJ24Df_BTk

 

[Daniel's Racing]

I recently bought a 4PLS and, after reading the manual and using it a couple times, find the only thing I really will use during a race is the receiver battery voltage. During prerace testing, the temp and RPM would be a nice feature but not during an actual heat

You wouldn't actually have to be reading the information. You can set parameters for each input so if it gets outside of those settings it will trigger the alarm to let you know your battery is low, your engine overheating or pegging a little to much RPM(yea we wish, lol no such thing). But true are you really going to stop in the middle of a race for any of it. Probably not.

 

[Blackout]

Well, I tried the Eagle Tree data logger with GPS and it didn't seem to record speed. When I down loaded the sessions to the computer, there was a time frame recorded and a single latitude and longitude, but no sign of movement. Any ideas? I'll have to try again.

Thanks.

Did the GPS update, ie: green light stop flashing on it?

Not sure as my radio box lid is wood. But it stops flashing in the house when I was testing it. Thanks.

 

[Mike Rappold]

Well, I tried the Eagle Tree data logger with GPS and it didn't seem to record speed. When I down loaded the sessions to the computer, there was a time frame recorded and a single latitude and longitude, but no sign of movement. Any ideas? I'll have to try again.

Thanks.

I had something similar before occur in my setup. I am using the Eagle Tree Data Logger (car and boat versions). This is not the eLogger version. I power the GPS from the receiver battery. The receiver battery is normally over 6.0VDC. I found that the GPS would not record if the supply voltage is over 6 VDC. I added a small voltage regulator from Maxx Products that gets it down to the 5.95 VDC range. Worked after that.

The logger would still record other variables like rpm, temps, etc. It was only the GPS that would not show up when the votlage was higher than 6V.

Mike

 

[Blackout]

Well, I tried the Eagle Tree data logger with GPS and it didn't seem to record speed. When I down loaded the sessions to the computer, there was a time frame recorded and a single latitude and longitude, but no sign of movement. Any ideas? I'll have to try again.

Thanks.

I had something similar before occur in my setup. I am using the Eagle Tree Data Logger (car and boat versions). This is not the eLogger version. I power the GPS from the receiver battery. The receiver battery is normally over 6.0VDC. I found that the GPS would not record if the supply voltage is over 6 VDC. I added a small voltage regulator from Maxx Products that gets it down to the 5.95 VDC range. Worked after that.

The logger would still record other variables like rpm, temps, etc. It was only the GPS that would not show up when the votlage was higher than 6V.

Mike

Interesting. Thanks.

Anyone else experience this? Rather not add something else in my radio box....

 

[Blackout]

Well, I tried the Eagle Tree data logger with GPS and it didn't seem to record speed. When I down loaded the sessions to the computer, there was a time frame recorded and a single latitude and longitude, but no sign of movement. Any ideas? I'll have to try again.

Thanks.

I had something similar before occur in my setup. I am using the Eagle Tree Data Logger (car and boat versions). This is not the eLogger version. I power the GPS from the receiver battery. The receiver battery is normally over 6.0VDC. I found that the GPS would not record if the supply voltage is over 6 VDC. I added a small voltage regulator from Maxx Products that gets it down to the 5.95 VDC range. Worked after that.

The logger would still record other variables like rpm, temps, etc. It was only the GPS that would not show up when the votlage was higher than 6V.

Mike

Thanks again for the timely response!

I ran over to the LHS and pickup a Castle voltage regulator to try out this long weekend.

 

[Terry Keeley]

I have the "elogger V4" (and the V3 before) and the "10 Hz GPS Expander Module" and run them off a 5 cell rx pack and haven't run into that problem. I've also run them on a separate pack that when charged is well over 6v no problems. BTW the LCD panel is great for testing as it can be programmed to display max speed, rpm etc. during a run.

Are you sure you've set it up right?

 

[Terry Keeley]

http://www.eagletreesystems.com/index.php?route=product/category&path=62&limit=100

 

[Blackout]

I have the "elogger V4" (and the V3 before) and the "10 Hz GPS Expander Module" and run them off a 5 cell rx pack and haven't run into that problem. I've also run them on a separate pack that when charged is well over 6v no problems. BTW the LCD panel is great for testing as it can be programmed to display max speed, rpm etc. during a run.

Are you sure you've set it up right?

No, I'm not sure.

I run 6.6 volt LiFe packs.

They will get to 7 volts sometimes....

 

[Terry Keeley]

I'd go through the setup again and take it for a drive (in your car)!

 

[Blackout]

Good idea.

 

[Joe Petro]

I ran the Eagle Tree inside of a wood radio box, under a wood deck.
GPS module inside the box with the telemetry antenna outside (why two antennas on the boat was a common question).

No trouble with 6V either.

I did find that the GPS takes longer to update when you travel to a different area.

When I set it up at home, it initially took a couple of minutes to lock, but after that it would lock within 2 or 3 seconds.

When I went to Elmira to race, it would again take a few minutes for the initial lock, then be fine the rest of the race.

If you use the dashboard, don't attach it to your transmitter unless you like hitting the shore. I dare you not to look at it while running...

I had Mr. Thompson holding the dashboard and calling speed and RPM ("58, 59, 14,500, 15,000...)

It worked well, and at night I looked at the whole thing on my laptop back at the motel.

 

[Blackout]

For what it's worth, I just did a test out of the boat, running down the street. It worked with a 6.3 volt NiMh, but not with a 6.7 volt LiFe.

The manual discusses max and min voltages, but only with regard to the transmitters if using the dashboard.

 

[Terry Keeley]

For what it's worth, I just did a test out of the boat, running down the street. It worked with a 6.3 volt NiMh, but not with a 6.7 volt LiFe.

The manual discusses max and min voltages, but only with regard to the transmitters if using the dashboard.

Wow, there ya go!

 

[Bob Morton]

I use a separate power supply for the data logger. I use four alkaline battery's. Powers the data logger,GPS,two RPM sensors,

Two head Temprature sensors,and the telemetry transmitter. Works for hours. I monitor the power supply on the dash board.

I only use the dashboard for testing. Never text while driving. (*¿*)

Nails.

 

[Blackout]

Tested in boat today with voltage reduced to 4.9 volts. All is good.